JPH1176714A - Filter attached to cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the fouling and consumption due to the scattering of a cleaning soln. by attaching a cap to the upper part of the casing of a first filter at the bottom of a cleaning tank, introducing a cleaning soln. to be supplied into the cleaning tank dispersedly and connecting a pipe provided with a valve communicating with a distiller obliquely to the position of a plug at the bottom of a second filter. SOLUTION: A plug 43 is detached to communicate the inside of the casing of a second filter 37 with the atmosphere, then a valve 45 is opened, and a cleaning soln. in the filter 37 flows down into a distillation tank 20. A pipe 46 is easily attached or detached to and from the casing 41 in a short time, the casing 41 is detached from a lid 40, and the filter is exchanged. A first filter 8 is firmly attached to a cleaning tank 3 by tapping the cleaning soln. outlet at the bottom of the tank 3, and plural arms are projected from the upper end of the casing to support the cap. The splashes formed when the cleaning soln. remaining on the bottom of the tank 8 and in the first filter 8 is evaporated are horizontally dispersed by the cap and sent up slowly, hence the surroundings are not contaminated with the soln., and the consumption of the cleaning soln. is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to water, an organic solvent,
A cleaning device that cleans dirt such as cutting oil, press oil, and flux adhering to machined articles without using a cleaning liquid such as a hydrocarbon-based cleaning liquid to leak these cleaning liquids and their vapors to the outside. Filter to be used.

[0002]

2. Description of the Related Art A cleaning apparatus provided with a filter according to the present invention includes a cleaning tank for storing an object to be cleaned and cleaning it with a cleaning liquid or its vapor, storing the cleaning liquid, and supplying the cleaning liquid to the cleaning tank at an appropriate time. And a distillation tank for distilling the dirty cleaning liquid to regenerate it into a fresh cleaning liquid. First, a conventional example of such a cleaning apparatus will be described with reference to FIG.

[0003] In FIG. 3, an ultrasonic vibrator 4 is attached to the bottom of a cleaning tank 3 having a closed lid 1 and containing an object 2 to be cleaned in order to enhance the cleaning effect. The lower part of the washing tank 3 is divided into two parts after passing through a first filter 8 and a drain valve 5, and one of them is passed through a drain pump 6 and a valve 7, and the liquid in a storage tank 9 having a closed lid is passed through. The cleaning liquid after completion of the cleaning is returned to the liquid storage tank 9, and the other is connected to a sealed steam generator 11 via a valve 10. When the liquid from the steam generator 11 is discharged, the liquid is returned to the liquid storage tank 9 by the liquid discharge pump 6. The steam generator 11 is provided with a heater 12 and heats the internal cleaning liquid to generate steam.
After that, it is fed to the washing tank 3. The lower part of the reservoir 9 is a valve 1
The cleaning liquid is supplied from the liquid storage tank 9 to the cleaning tank 3 through 4. A heater 15 and a cooling coil 16 are provided in the liquid storage tank 9 so that the temperature of the cleaning liquid can be adjusted. The vapor space at the top of the washing tank 3 is divided into two parts after passing through a valve 17 and a vacuum pump 18, one through a valve 19 to a distillation tank 20, and the other through a valve 21 to a washing liquid recovery device 22. I have. The vapor of the cleaning liquid sucked from the cleaning tank 3 is collected in the distillation tank 20 and the remaining air is discharged to the cleaning liquid recovery device 22 or to the atmosphere. The distillation tank 20 has a heater 23, which heats and evaporates the cleaning liquid in the tank, liquefies it by the upper cooling coil 24, produces fresh cleaning liquid, and flows into the annular gutter 25. In the distillation tank 20, the washing liquid is stored in the lower part, and the heater 23 is in the middle part.
The steam in the upper portion becomes a steam region in which the steam of the cleaning liquid heated and evaporated exists. The steam rising to the upper portion is cooled and liquefied as described above, collected on the annular gutter 25, and passed through the dehydration deoxidation tank 28 by the pipe 26. After the vapor is liquefied, an air region excluding the cleaning liquid vapor is formed above the distillation tank 20. The washing liquid overflowing from the liquid storage tank 9 is introduced into the distillation tank 20 through the pipe 29. 30
Is a valve for allowing the atmosphere to flow into the washing tank 3 through the filter 31, and 32 and 33 are manual valves for draining the distillation tank 20 and the dehydration / deoxidation tank 28. The first supply and discharge of the cleaning liquid to each of these tanks is performed by opening the valve 27. The valves 27, 32, and 33, which are used less frequently, may be manual valves, but the other valves can be automatically controlled as solenoid valves, motor valves, air valves, and the like. Pipes 35a, 35 are provided at the lower part of the liquid storage tank 9.
The cleaning liquid in the storage tank 9 is circulated through the valve 36, the second filter 37, the circulation pump 38, and the valve 39, and the solid dirt mixed in the liquid is captured to purify the cleaning liquid.

As shown in FIG. 4, a second filter 37 holds a cylindrical filter 42 in a casing 41 hermetically sealed by a lid 40, and allows a washing liquid flowing from a pipe 35b to pass through the filter 42 through a pipe 35c. Is to be spilled to Reference numeral 43 denotes a plug for connecting the inside of the casing 41 to the atmosphere, and reference numeral 44 denotes a plug for discharging the cleaning liquid in the casing.

When performing cleaning, the object 2 to be cleaned is sealed in the cleaning tank 3, and the valves 14, 17, 19 or 21 are opened and the vacuum pump 18 is operated. The washing liquid flows through the valve 14 through the
Soak. Then, cleaning is performed by driving the ultrasonic vibrator 4. When the supply of the cleaning liquid is completed, the valve 14 is closed and the vacuum pump 1
Stop 8.

When performing the above washing, first, the valve 5,
The drainage pump 6 is operated by opening the cleaning tanks 7 and 13 to return the cleaning liquid in the cleaning tank to the storage tank 9 while introducing the cleaning liquid vapor into the cleaning tank 3, and then the valves 5 and 7 are closed and the drainage pump is closed. 6 is stopped. In this case, the vapor of the cleaning liquid generated by the vapor generator 11 continuously enters the cleaning tank 3 and vapor-cleans the object to be cleaned. When the valve 13 is closed and the valves 17 and 19 are opened to operate the vacuum pump 18, the cleaning liquid vapor sucked by the vacuum pump 18 is sent to the distillation tank 20 to be liquefied and collected.

[0007] When the cleaning is further completed, the valves 13, 14
With the valve closed, the valve 30 is opened, and the filter 3 is
After the clean air passed through 1 is introduced, the valves 17 and 21 are opened and the vacuum pump 18 is operated. The cleaning liquid gas in the cleaning tank is recovered through the recovery device 22, and at the same time, the sucked air is released to the atmosphere. When the air circulation is continued, the article to be cleaned 2 is dried.

[0008]

SUMMARY OF THE INVENTION The present invention relates to first and second filters 8, 37. First, the second filter 37 will be described with reference to the example of FIG.
Filter 42 has to be replaced because the filter 42 becomes clogged with a long use period. The operation is plug 4
3 is removed to allow the inside of the casing 41 to communicate with the atmosphere, and at the bottom, the plug 44 is removed to discharge the cleaning liquid inside.
The cleaning is performed by removing the casing 41 from the lid 40. However, since the cleaning liquid is not completely captured, the surroundings are soiled and the vapor of the cleaning liquid is diffused. This operation is troublesome.
Also, when you are in a hurry, leave the plugs 43 and 44 as they are,
In some cases, the filter replacement is performed without performing time-consuming liquid discharge.
Since a large amount of the cleaning liquid is contained and a large amount of the liquid remains in the casing 41, a large amount of the liquid is scattered and stains the surroundings.
Since a large amount of the cleaning liquid evaporates and is released into the atmosphere, a cleaning liquid such as CFC substitute has an adverse effect on the environment.

The first filter 8 provided at the lower portion of the washing tank 3 has conventionally only been fitted to the cylindrical portion of the outlet of the washing tank 3, so that the washing liquid, the vapor of the washing liquid and the air There was an inconvenience that it was easy to move due to the distribution.

[0010]

According to the present invention, the first filter 8 is screwed to the bottom of the washing tank 4 and a cap is attached to the upper part of the casing to disperse the washing liquid to be supplied to the washing tank 3. In the second filter, a pipe provided with a valve is connected to the position of the bottom plug 44 with a downward inclination, and the pipe is connected to the still 20 to eliminate the above-mentioned inconvenience. Things.

[0011]

Since the first filter is screwed into the outlet at the bottom of the washing tank 3, it is not moved by the liquid flow. After cleaning, the valves 17 and 19 are opened and the vacuum pump 18 is opened.
In the step of evaporating and drying the cleaning liquid remaining in the tank 3 and the object to be cleaned 2 by depressurizing the cleaning tank 3 by operating the cleaning tank 3, the cleaning liquid remaining in the bottom of the cleaning tank 3 and the first filter 8 is removed. When it evaporates, it forms droplets and adheres to the object 2 to be cleaned,
Although fine dirt in the cleaning liquid may recontaminate the object to be cleaned, splashes of the cleaning liquid do not disperse and directly collide with the object to be cleaned because of the shade attached to the upper part of the first filter. There is no danger of re-contaminating the object to be cleaned due to minute dirt in the cleaning solution.

Since the bottom of the second filter 37 is provided with a valve 45 and communicates with the distillation tank 20 through an inclined pipe 46, the washing liquid to be discharged when the filter is replaced is discharged to the distillation tank 20 only by opening the valve 45. It is possible to avoid scattering and consumption of the cleaning liquid.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows that one end of a pipe 46 having a valve 45 is connected to a position of a plug 44 at the bottom of a second filter 37, and the pipe 46 is inclined downward and the other end is connected. The configuration connected to the distillation tank 20 is shown. Therefore, when the plug 43 is removed (or loosened) and the inside of the casing of the filter 37 is opened to the atmosphere and the valve 45 is opened, the washing liquid in the second filter 37 flows down to the distillation tank 20. If only this operation is left as it is, the washing liquid in the filter is automatically discharged. Then, the pipe 46 can be removed from the casing 41, the casing 41 can be removed from the lid 40, and the filter 42 can be replaced. The attachment and detachment of the pipe 46 is easy. Since this filter replacement operation can be performed in a short time including the discharge of the cleaning liquid, the filter can be replaced after the entire cleaning liquid has been discharged even in an urgent case.

As shown in FIG. 2, the first filter 8 has a female screw formed at a cleaning liquid discharge port at the bottom of the cleaning tank 3, and a male screw 49 formed at a lower portion of a casing 48 holding the filter 47. The female thread 3 is screwed into the female thread 3 to strengthen the connection with the cleaning tank 3. A plurality of arms 50 project from the upper end of the casing 48 to support the cap 51. Therefore, when the cleaning liquid remaining in the bottom of the cleaning tank 3 and the first filter 8 evaporates, the droplets are scattered laterally due to the shade 51 and gradually rise, so that the cleaning liquid contains a small amount of dirt. However, it does not adhere to the object to be cleaned.

[0015]

(1) In the first filter 8, the filter 4
Since the casing 48 holding the 7 is screwed to the bottom of the washing tank 3, the connection is strong and does not move due to the liquid flow.

(2) Since the cap 51 is provided above the casing 48 to disperse the rising cleaning liquid droplets, it is possible to prevent them from adhering to the object to be cleaned.

(3) In the second filter 37, the operation of replacing the filter 42 is facilitated, and there is no danger of scattering the cleaning liquid to pollute the surroundings, spraying toxic vapor, and preventing consumption of the cleaning liquid. .

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a cleaning device incorporating first and second filters according to the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration of a first filter according to the present invention.

FIG. 3 is a schematic diagram showing a conventional cleaning device.

FIG. 4 is a longitudinal sectional view of a conventional example of a second filter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealing lid 2 Cleaning object 3 Cleaning tank 4 Ultrasonic oscillator 5 Valve 6 Drainage pump 7 Valve 8 First filter 9 Reservoir tank 10 Valve 11 Steam generator 12 Heater 13, 14 Valve 15 Heater 16 Cooling coil 17 Valve 18 Vacuum pump 19 Valve 20 Distillation tank 21 Valve 22 Cleaning liquid recovery device 23 Heater 24 Cooling coil 25 Ring gutter 26 Pipe 27 Valve 28 Dehydration deoxidation tank 29 Pipe 30 Valve 31 Filter 32, 33 Manual valve 35a, 35b, 35c Pipe 36 Valve 37 Second filter 38 Circulating pump 39 Valve 40 Lid 41 Casing 42 Filter 43, 44 Plug 45 Valve 46 Pipe 47 Filter 48 Casing 49 Male screw 50 Arm 51 Shade 52 Reverse truncated conical cylinder

Claims (3)

[Claims] A cleaning tank for storing an object to be cleaned and cleaning it with a cleaning liquid or a vapor thereof; a storage tank for storing the cleaning liquid and supplying the cleaning liquid to the cleaning tank; A casing (41) attached to a washing device having a distillation tank (20) for regenerating by distillation, wherein the casing is provided with a filter attached to a conduit for circulating a washing liquid in a storage tank by a circulation pump. ), A filter (45) provided with a valve (45), which is connected to the liquid storage tank by being inclined downward toward the liquid storage tank, and which is attached to a washing device connected to the liquid storage tank. 2. A cleaning tank (3) for storing an object to be cleaned and cleaning it with a cleaning liquid or its vapor, a storage tank (9) for storing the cleaning liquid and supplying the cleaning liquid to the cleaning tank, A filter attached to a washing device having a distillation tank (20) for regenerating by distillation, wherein a male screw (49) is formed in a casing (48) holding a filter (47), and a washing liquid in the washing tank is provided. A filter attached to a cleaning device which is screwed into a female screw formed at the discharge port and has a plurality of arms (50) protruding from an upper end of a casing (48) to support a shade (51). 3. The filter according to claim 2, wherein the filter is attached to a washing device having an inverted truncated cone-shaped cylinder (52) above the filter in a casing (48) holding the filter (47).